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Potassium
Actinium
Americium
Antimony
Arsenic
astatine
baruim
Berkelium
Beryllium
Bismuth
Bohrium
Boron
Bromine
Cadmium
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Califronium
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Cesium
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Roentgenium
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Roentgenium!
Element: Roentgenium
Discovered: In 1994 in the "Gesellschaft für Schwerionenforschung" Or "Society for
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Roentgenium!
Element: RoentgeniumDiscovered: In 1994 in the "Gesellschaft für Schwerionenforschung" Or "Society for